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(parent: 592a6ec) | patch
ext4: fix overflows in SEEK_HOLE, SEEK_DATA implementations
authorJan Kara <jack@suse.cz>
Fri, 31 May 2013 23:37:56 +0000 (19:37 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Fri, 31 May 2013 23:37:56 +0000 (19:37 -0400)
commitf5474bee283d59f3efca630affd9f9ecb45d15a7
tree7216115993c95f6648bd58fdbae91527ffedbb18tree | snapshot
parent592a6ecef5725602316b5d4afb0adc6111f5bae6commit | diff
ext4: fix overflows in SEEK_HOLE, SEEK_DATA implementations

ext4_lblk_t is just u32 so multiplying it by blocksize can easily
overflow for files larger than 4 GB. Fix that by properly typing the
block offsets before shifting.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
fs/ext4/file.c diff | blob | history
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